Improved artificial variegated marble



PATENTED NOV. 17, 1863,

No. Lycoo.

l A. & 1. STRAUB.

ARTIFIGIALVARIEGATBD MRBLE,

w i'm es e s: A

of asphaltum and shale-rock, mixed UNITE-D STATES PATENT OFFICE-t- GINOINNTI, omo.

IMPRVEDARTll-'IClAL VARIEGATED MARBLE.

Specification forming part of Letters PatentNo. 40,'650, dated November 17, 1863'.

l To all whom it may concern/.v

Beit known that we, ABRAHAM STRnUB of Milton, l \iorthumberland count-y, State of' Pennsylvania, and ISAAC STRAUB, of Uincin-i. nati, in the county of Hamilton andjStatc off Ohio, have invented a new and useful Sea-.t

Shell or' Ornamental Marble; and we do here. by `declare that .the i'ollowingis afull, clear, and exact description thereof,refere1ice beingv had to the 'accompanying drawings, making @a part of this specification. in which-f Figure 1 is a perspective view o fa block of 2 yis afsectional view 0f .our resemble Fig. 1.

j Similar letters of reference indicate correspending parts in'the ltwo figures.y

This invention ha 'foritsjobject the production of an artificial-*marble having a dark or black ground interspersed. with light-colored substances. l

The invention consists in a cement composed ith moiher-of-pearl, bones, and other like substances,lw'hich will give a variegated appearance to the conglomerate, as will be hereinafter described; u

The following is a description of the new marble and the mode of making it In a suitable vessel wefintroduce one part of mineral tar and boil this tar until it has given off the greater portion of the naphtha. We thenaddto this boiling tar an equal proportion of very dry and`iinely-pulverized shale-rock, thus making a cement which constitutes'the basis of the new marble. Into this cement we introduce in considerable quantities small. pieces of mother-of-pearl, bone, and other similar substances, which are intended to give a variegated appearance to the surfaces of the molded 4and finished blocks.

rllhe mass'should be thoroughly stirred, softhat the colored substances last introduced will be thoroughly intermixed Wit-h vthe cement; and

when the mass 'has been properly heated and mixed,'it is poured intomolds- 'of'any desirable for/n1-v and rset away to cool 'and to solidify,

after 'which thesolid blocks are removed from the molds, ground down, and l-iolished.l Inthe polished surface will be seen 'firmly embedded the, different, substances which were last introducedv into the boiling mass, and the variety ofcolors and;l shapes of. these substances n'ill' giveto, ,the blocks,A a very 'hand some appearance. l"

vThedrawings represent'` one of these blocks ,Y

having the substances da' a interspersed over its surface. We also" represent letters in. this 'block to show that letters or characters of any-:description maybe ein bedded in the blocks either by introduo'ing'them into the mixture before it has cooled vor by setting them up in the molds and pouring the n'iixturearoundv them. We propose to use'pieces of sea-shell or small, unbroken shells, and, indeed, any kind of substance which will receive a polished surface and give a handsome appearanceto `the blocks.

We claimV as a new article of manufacture? The sea-shell or ornamental marble composed of the ingredients united substantially in the proportions herein set forth.

Witness our hands inthe matter of our alpplication for apatcnt for an improved ornamental concrete.

A. STRAUB.

lIsAAo sTRAUB. i

Witnesses: R. T. CAMPBELL. E. SGHAFER. 

